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SN74LS90 - DECADE COUNTER

Description

The LS90, LS92, and LS93 are 4-bit ripple type Decade, Divide-By-Twelve, and Binary Counters respectively.

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Datasheet Details

Part number SN74LS90
Manufacturer onsemi
File Size 166.75 KB
Description DECADE COUNTER
Datasheet download datasheet SN74LS90 Datasheet

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Other Datasheets by onsemi

Part Number Description
SN74LS92 DIVIDE-BY-TWELVE COUNTER
SN74LS93 4-BIT BINARY COUNTER
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SN74LS90 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER The SN54 / 74LS90, SN54 / 74LS92 and SN54 / 74LS93 are high-speed 4-bit ripple type counters partitioned into two sections. Each counter has a divide-by-two section and either a divide-by-five (LS90), divide-by-six (LS92) or divide-by-eight (LS93) section which are triggered by a HIGH-to-LOW transition on the clock inputs. Each section can be used separately or tied together (Q to CP) to form BCD, bi-quinary, modulo-12, or modulo-16 counters. All of the counters have a 2-input gated Master Reset (Clear), and the LS90 also has a 2-input gated Master Set (Preset 9). • Low Power Consumption . . . Typically 45 mW • High Count Rates . . . Typically 42 MHz • Choice of Counting Modes . . .
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